US PATENT SUBCLASS 335 / 257
.~.~.~ With shock-absorbing means (e.g., means to absorb the shock of armature or plunger)

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

209  DF  MAGNETS AND ELECTROMAGNETS {10}
220  DF  .~ With magneto-mechanical motive device (e.g., electromagnet with armature) {21}
255  DF  .~.~ With plunger-type armature {6}
257.~.~.~ With shock-absorbing means (e.g., means to absorb the shock of armature or plunger)

DEFINITION

Classification: 335/257

(under subclass 255) Subject matter including means to absorb the shock of the armature when coming to rest against an armature stop, thereby preventing vibration of the armature.

(1) Note. The shock absorber means may be a spring means or other resilient material serving as a cushion to stop the armature movement with minimum of armature vibration.

SEE OR SEARCH THIS CLASS, SUBCLASS:

46, for automatic circuit interrupters with undesirable motion prevention means.

104, for alternating current switches with vibration preventing means.

193, for switches with vibration or bounce preventing means.

247, for alternating current electromagnet with chatter or noise preventing means. 271, for electromagnet armature mounting means with armature bounce or vibration preventing means.

277, for electromagnet mounting arrangement with shock absorption.